fix permutation str test
fix permutation str test

souravsingh/sympy,sampadsaha5/sympy,garvitr/sympy,skidzo/sympy,Mitchkoens/sympy,AunShiLord/sympy,kevalds51/sympy,grevutiu-gabriel/sympy,abhiii5459/sympy,Arafatk/sympy,asm666/sympy,saurabhjn76/sympy,kaichogami/sympy,grevutiu-gabriel/sympy,toolforger/sympy,kaichogami/sympy,Shaswat27/sympy,beni55/sympy,ahhda/sympy,toolforger/sympy,emon10005/sympy,sunny94/temp,saurabhjn76/sympy,Curious72/sympy,sunny94/temp,yashsharan/sympy,meghana1995/sympy,kaichogami/sympy,mafiya69/sympy,iamutkarshtiwari/sympy,Mitchkoens/sympy,hargup/sympy,liangjiaxing/sympy,postvakje/sympy,jaimahajan1997/sympy,MridulS/sympy,hargup/sympy,atsao72/sympy,chaffra/sympy,asm666/sympy,bukzor/sympy,shikil/sympy,drufat/sympy,postvakje/sympy,sahilshekhawat/sympy,beni55/sympy,cswiercz/sympy,atsao72/sympy,dqnykamp/sympy,meghana1995/sympy,maniteja123/sympy,postvakje/sympy,liangjiaxing/sympy,sahilshekhawat/sympy,lidavidm/sympy,AkademieOlympia/sympy,aktech/sympy,AunShiLord/sympy,kevalds51/sympy,mafiya69/sympy,Titan-C/sympy,jerli/sympy,abhiii5459/sympy,Designist/sympy,VaibhavAgarwalVA/sympy,Mitchkoens/sympy,diofant/diofant,cccfran/sympy,pbrady/sympy,lidavidm/sympy,Gadal/sympy,vipulroxx/sympy,kaushik94/sympy,jbbskinny/sympy,amitjamadagni/sympy,shikil/sympy,Sumith1896/sympy,wyom/sympy,moble/sympy,madan96/sympy,debugger22/sympy,sahmed95/sympy,souravsingh/sympy,aktech/sympy,kumarkrishna/sympy,sahmed95/sympy,rahuldan/sympy,kumarkrishna/sympy,MechCoder/sympy,Vishluck/sympy,hrashk/sympy,mcdaniel67/sympy,ga7g08/sympy,oliverlee/sympy,kmacinnis/sympy,sahilshekhawat/sympy,MechCoder/sympy,Curious72/sympy,skidzo/sympy,Arafatk/sympy,yukoba/sympy,oliverlee/sympy,wyom/sympy,pandeyadarsh/sympy,sahmed95/sympy,skidzo/sympy,shikil/sympy,skirpichev/omg,vipulroxx/sympy,debugger22/sympy,mafiya69/sympy,AkademieOlympia/sympy,kaushik94/sympy,sampadsaha5/sympy,moble/sympy,rahuldan/sympy,MridulS/sympy,farhaanbukhsh/sympy,hrashk/sympy,kaushik94/sympy,ChristinaZografou/sympy,beni55/sympy,sampadsaha5/sympy,abhiii5459/sympy,Designist/sympy,VaibhavAgarwalVA/sympy,ahhda/sympy,toolforger/sympy,jerli/sympy,Titan-C/sympy,chaffra/sympy,iamutkarshtiwari/sympy,pandeyadarsh/sympy,ChristinaZografou/sympy,lindsayad/sympy,Gadal/sympy,mcdaniel67/sympy,yukoba/sympy,hargup/sympy,liangjiaxing/sympy,cccfran/sympy,ahhda/sympy,moble/sympy,farhaanbukhsh/sympy,chaffra/sympy,madan96/sympy,saurabhjn76/sympy,cswiercz/sympy,vipulroxx/sympy,yashsharan/sympy,Sumith1896/sympy,yashsharan/sympy,bukzor/sympy,Vishluck/sympy,MridulS/sympy,jamesblunt/sympy,AunShiLord/sympy,jerli/sympy,atreyv/sympy,amitjamadagni/sympy,rahuldan/sympy,Shaswat27/sympy,ga7g08/sympy,lidavidm/sympy,maniteja123/sympy,emon10005/sympy,ga7g08/sympy,Curious72/sympy,jbbskinny/sympy,MechCoder/sympy,abloomston/sympy,Shaswat27/sympy,debugger22/sympy,emon10005/sympy,dqnykamp/sympy,souravsingh/sympy,Arafatk/sympy,Sumith1896/sympy,sunny94/temp,wyom/sympy,farhaanbukhsh/sympy,jaimahajan1997/sympy,cccfran/sympy,jbbskinny/sympy,Davidjohnwilson/sympy,oliverlee/sympy,bukzor/sympy,Vishluck/sympy,Davidjohnwilson/sympy,kevalds51/sympy,drufat/sympy,garvitr/sympy,aktech/sympy,AkademieOlympia/sympy,shipci/sympy,kmacinnis/sympy,atsao72/sympy,Davidjohnwilson/sympy,grevutiu-gabriel/sympy,maniteja123/sympy,wanglongqi/sympy,hrashk/sympy,wanglongqi/sympy,mcdaniel67/sympy,pbrady/sympy,iamutkarshtiwari/sympy,shipci/sympy,garvitr/sympy,jamesblunt/sympy,dqnykamp/sympy,VaibhavAgarwalVA/sympy,madan96/sympy,asm666/sympy,cswiercz/sympy,meghana1995/sympy,pbrady/sympy,atreyv/sympy,Titan-C/sympy,jamesblunt/sympy,lindsayad/sympy,atreyv/sympy,kmacinnis/sympy,jaimahajan1997/sympy,ChristinaZografou/sympy,Designist/sympy,yukoba/sympy,drufat/sympy,lindsayad/sympy,shipci/sympy,pandeyadarsh/sympy,kumarkrishna/sympy,wanglongqi/sympy,Gadal/sympy,abloomston/sympy,abloomston/sympy